The document provides an overview of three-dimensional (3D) arrays, which are used to store 3-dimensional data by combining multiple 2D arrays. It includes methods for declaration, initialization, and accessing elements in 3D arrays, highlighting two initialization techniques. The lecture emphasizes the structure and practical applications of 3D arrays in programming.

1. Week# 10
Multidimensional Arrays
Dr Taimur Ahmed
Department of IT & CS, PAF-IAST

2. Lecture# 27
Three dimensional (3D) Array

3.  A 3D array is a multidimensional array used to store 3-dimensional data
 In other words, a 3D array is an array of arrays
 To visualize a 3D array, consider two 2D arrays when they are
combined, they form a 3D array
3D Array
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Lecture# 27 - 3D Array
a[0][0] a[0][1] a[0][2] a[0][3]
a[1][0] a[1][1] a[1][2] a[1][3]
Row 0
Column 0 Column 1 Column 2 Column 3
2x4
Row 1
b[0][0] b[0][1] b[0][2] b[0][3]
b[1][0] b[1][1] b[1][2] b[1][3]
Row 0
Column 0 Column 1 Column 2 Column 3
Row 1
2x4

4.  Use three declarators in definition:
Data_type Name_of_Array[Array_Number][ROW][COLUMN];
 First declarator is number of arrays; second is number of rows; third is
number of columns
const int ARR = 2, ROWS = 4, COLS = 3;
int exams[ARR][ROWS][COLS];
3D Array – Declaration
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Lecture# 27 - 3D Array

5.  Two methods of initialization with declaration:
1. With internal braces { }
int Array[2][3][3] = {
{{1,1,1},{2,2,2},{3,3,3}},
{{4,5,6},{7,8,9},{10,11,12}}
}
2. Without internal braces { }
int Array[2][3][3] = {1,1,1,2,2,2,3,3,3,
4,5,6,7,8,9,10,11,12}
3D Array – Initialization
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Lecture# 27 - 3D Array

6. 3D Array – Printing
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Lecture# 27 - 3D Array

7. 3D Array – Printing with index
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Lecture# 27 - 3D Array

8. 3D Array – Accessing an element
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Lecture# 27 - 3D Array

9. 3D Array – Input elements
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Lecture# 27 - 3D Array